| Communailles-en-Montagne | |
| Coordinates: | 46.8108°N 6.0986°W |
| Insee: | 39161 |
| Postal Code: | 39250 |
| Arrondissement: | Lons-le-Saunier |
| Canton: | Saint-Laurent-en-Grandvaux |
| Commune: | Mignovillard |
| Elevation Min M: | 770 |
| Elevation Max M: | 888 |
| Area Km2: | 4.01 |
| Population: | 54 |
| Population Date: | 2017 |
| Population Footnotes: | [1] |
Communailles-en-Montagne (in French pronounced as /kɔmynaj ɑ̃ mɔ̃taɲ/) is a former commune in the Jura department in Bourgogne-Franche-Comté in eastern France. On 1 January 2016, it was merged into the commune of Mignovillard.[2]